Server Error in '/' Application.

The given key was not present in the dictionary.

Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.Collections.Generic.KeyNotFoundException: The given key was not present in the dictionary.

Source Error:

An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.

Stack Trace:


[KeyNotFoundException: The given key was not present in the dictionary.]
   System.ThrowHelper.ThrowKeyNotFoundException() +38
   System.Collections.Generic.Dictionary`2.get_Item(TKey key) +54
   MySql.Data.MySqlClient.CharSetMap.GetCharacterSet(DBVersion version, String CharSetName) +33
   MySql.Data.MySqlClient.CharSetMap.GetEncoding(DBVersion version, String CharSetName) +19
   MySql.Data.MySqlClient.Driver.Configure(MySqlConnection connection) +975
   MySql.Data.MySqlClient.NativeDriver.Configure(MySqlConnection conn) +16
   MySql.Data.MySqlClient.MySqlConnection.Open() +474
   HMS_Asp.tconn.cn_open() in tconn.vb:68
   HMS_Asp.tconn.GetCompanyDetail() in tconn.vb:132
   HMS_Asp.tconn.tcon() in tconn.vb:62
   HMS_Asp.WebForm1.Page_Load(Object sender, EventArgs e) in FrmLogin.aspx.vb:17
   System.Web.UI.Control.OnLoad(EventArgs e) +108
   System.Web.UI.Control.LoadRecursive() +90
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +1533


Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.8.4700.0